
Marijuana | History, Effects, THC, & Legality | Britannica
Dec 25, 2025 · Marijuana, drug composed of the leaves and flowers of plants in the genus Cannabis. Marijuana is known by several other names, including pot, grass, and weed. It can vary widely in …
Cannabis (drug) - Wikipedia
Cannabis (/ ˈkænəbɪs /), [2] commonly known as marijuana (/ ˌmærəˈwɑːnə /), [3] weed, pot, and ganja, among other names, is a non-chemically uniform psychoactive drug from the Cannabis plant. Native …
What to know about pot addiction and treatment | AP News
Doctors say it's possible to get hooked on pot. There's a widespread misconception that marijuana is not addictive, and it's expanded as a growing number of states legalize pot.
Know the Effects, Risks and Side Effects of Marijuana - SAMHSA
Sep 9, 2025 · Marijuana is the most commonly used illegal substance in the U.S. and its use is growing. Marijuana use among all adult age groups, both sexes, and pregnant women is going up. At the …
Marijuana (Cannabis, Weed): What It Is, Side Effects & Risks
Marijuana is a mind-alerting substance that comes from the Cannabis sativa plant. Other names for it are weed, pot and dope.
Marijuana: Effects, Medical Uses and Legalization - Drugs.com
Marijuana is used as a psychoactive, mind altering recreational drug and for certain medical ailments. The active agent that leads to the "high" is THC (delta-9-tetrahydrocannabinol). According to the …
Marijuana - Mayo Clinic
Aug 15, 2025 · There are more than 100 active compounds in cannabis. The most common cannabinoids are delta-9 tetrahydrocannabinol, also called THC, and cannabidiol, also called CBD. …
Marijuana - DEA.gov
Mind-altering psychoactive drug. Dry, shredded, green/brown mix of flowers, stems, seeds and leaves from the cannabis sativa plant. THC (delta-9-tetrahydrocannabinol) is the main ingredient that …
Cannabis (Marijuana) | National Institute on Drug Abuse (NIDA)
Sep 24, 2024 · In recent years, there have been big increases in the variety of cannabis products and how much THC they have, as well as a greater variety of ways people can consume them. Unless …
Marijuana - MedlinePlus
Mar 8, 2024 · Marijuana contains the mind-altering chemical THC. Some U.S. states approve the use of medical marijuana.